m5l8279p-5

Discussion in 'The Projects Forum' started by jhdtrinh, Jun 17, 2014.

  1. jhdtrinh

    Thread Starter New Member

    Jun 17, 2014
    2
    0
    hello im new. please advice on this chip. from mitsubishi m5L8279p-5. if i replace it from the circuit does it need to be reprogramed?
     
  2. absf

    Senior Member

    Dec 29, 2010
    1,493
    372
    Though it is called programmable keyboard/display, it is actually programmable from the host connected to it. Functionally it is the same as the Intel 8279 chip. See datasheet attached.

    Allen
     
  3. jhdtrinh

    Thread Starter New Member

    Jun 17, 2014
    2
    0
    thank you absf. i will replace it now hope it works. it belongs to a 20 button display part. none of the buttons respond now. i found some corrosion at the pins on this chip.
     
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